Earth summit,Joseph Priestley

=1992: The Earth summit : Rio de Janeiro.
=1997: Ist transgenic cow- Rosie. It produces human protein enriched milk (2.4 grams per litre). The milk contain the human alpha-lactalbumin
=1997 : An American company got patent rights on Basmati Rice.
=1997: Kyoto protocol: Held in Kyoto(Japan).
=2002 : World summit. Held in Johannesburg (South Africa).
=2002 : All buses of Delhi were converted by CNG.
=2005 : Nobel prize of chemistry given to ‘Green chemists’ Chauvin, Grubbs & Schrock.

=1770 ; Joseph Priestley - Essential role of air in growth of green plant.
=1774 : Joseph Priestley - Discovered Oxygen
=1831; Robert Brown - 1st discovered and described nucleus.
=1838 : Schleiden (German Botanist) - Work on plants.
=1839 : Schwann(British Zoologist) - Work on both plants & animals.
=1855: Rudolf Virchow - Omnis cellula-e-cellula (cells arises from pre-existing cells).
=Life originate from pre-existing life : Pasteur (Yeast).
=Life originate from non-living (decaying & rotting matter) : Spontaneous generation.
=Life originate from pre-existing non-living organic molecules (RNA, Protein)- Oparin (Russia) & Haldane (England)- Chemical Evolution.
=1856 - 1863: Mendal experiment on garden pea. (7 years)
=1860 : Julius von Sachs - Developed hydroponics.
=1865: Mendal published his work,
=1866 : Langdon Down - Down's syndrome.
=1869 : Friedrich Meischer - Ist identified DNA and named it nuclei.
=1891 ; Henking - Discovered X-body.
=1891 : Fossil discovered in Java - Homo erectus.
=1892 : Ivanowsky - Discovered virus.
=1898: Beijerinek - Contagium vivum fluidum (infectious living fluid).
=1898 : Camillo Golgi - Discovered (observed) G.B.
=1900: de Vries, Correns and von Tschermak independentlyrediscovered Mendel’s results.
=1902 : Chromosome movement during meiosis has been worked out.
=1905: Law of limiting factor (Blackmann).
=1928; Fredrick Griffith - Transforming experiment with Streptococcus pneumoniae (Diplococcus).
=1935 ;Stanley - Crystallised viruses.
=1937 ; Ramdeo Misra obtained Ph.D. in Ecology from Leeds university (U.K,).
=1938 ; Coelocanth fish caught in South Africa.Fleming, Chain & Florey - Awarded Nobel prize.
=1950 ; Watson obtained Ph.D. on a study of the effect of hard X-rays on bacteriophage multiplication,
=1951 ; Family planning programme started in India.
=1952 ; Hershey & Chase-experiment on bacteriophage or Bacterial virus gives unequivocal proof that DNA is the genetic material.
=1953 ; Miller experiment - Methane, ammonia, hydrogen & water vapour,
=1953 ; Watson & Crick - Double helical structure of B-DNA & replication scheme.
=1953 ; Palade : Discovered ribosome.
=1954 ; Ramachandran - Triple helical model of collagen, published in Nature,
=1954 ; Crick completed Ph.D. on a thesis “X-rays diffraction : polypeptides and proteins.
=1958 ; Meselson & Stahl - Work on £.coli proves semiconservative replication of DNA in prokaryotes,
=1958 ; Taylor - Work on Vicia faba proves semiconservative replication of DNA in eukaryotes,
=1960. Katherine Esau - Published “Anatomy of Seed Plants.”
=1961. Melvin Calvin - Nobel Prize.
=1962. Watson, Crick and Wilikins - Nobel Prize.
=1963. Wheat varieties (Sonalika & Kalyan sona) introduced.
=1963 Two enzyme responsible for restricting growth of bacteriophage in E.coli were isolated.
=1966. Derivative of IR-8 & Taichung native-I introduced.
=1969; Whittaker - Five kingdom classification.
=1971: Govt. of India legalized MTP.
=1971. Diener- Discovered Viroid(free RNA without capsid).
=1972 Singer & Nicolson - Fluid mosaic model.
=1972 Stanley Cohen & Herbert Boyer - Formed Ist recombinant DNA.
=1972 Establishment of NCEPC - National Committee for Environmental Planning & Coordination.
=1974: Water act.
=1980 Joint forest management, (JFM).
=1981 AIDS was 1st reported.
=1981 Air act.
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